Wall Quenching of Methane-Air Flame

Abstract

It is important to study flame quenching at cold walls where fuels are not completely oxidized, in connection with unburned hydrocarbon emissions, flame stabilization, etc. By using various hydrocarbon fuels and surface conditions, Saffman [1] and Ishikawa [2] studied the 4 quenching layer thickness. It is difficult to measure the distributions of temperature and species concentration in the layer, since the wall flame quenching takes place very close to the wall. But the numerical analysis of flame quenching at the wall enables one to obtain detailed profiles of temperature and species concentration, especially active species concentration near the wall. This gives useful information for understanding the mechanism of flame quenching.